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                <h1 id="jQuery"><a href="#jQuery" class="headerlink" title="jQuery"></a>jQuery</h1><h2 id="基础"><a href="#基础" class="headerlink" title="基础"></a>基础</h2><h3 id="CDN引用jQuery"><a href="#CDN引用jQuery" class="headerlink" title="CDN引用jQuery"></a>CDN引用jQuery</h3><pre class="line-numbers language-html" data-language="html"><code class="language-html"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script"></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>

<blockquote>
<p> <strong>您是否很疑惑为什么我们没有在  标签中使用 type=”text/javascript” ？</strong></p>
<p>在 HTML5 中，不必那样做了。JavaScript 是 HTML5 以及所有现代浏览器中的默认脚本语言！ </p>
</blockquote>
<h3 id="在文档加载后执行js"><a href="#在文档加载后执行js" class="headerlink" title="在文档加载后执行js"></a>在文档加载后执行js</h3><pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span>document<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">ready</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
 
   <span class="token comment">// 开始写 jQuery 代码...</span>
 
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>这就等价于：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token comment">// 执行代码</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span></span></code></pre>

<p>同时等价于js中的：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js">window<span class="token punctuation">.</span><span class="token function-variable function">onload</span> <span class="token operator">=</span> <span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">&#123;</span>
    <span class="token comment">// 执行代码</span>
<span class="token punctuation">&#125;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span></span></code></pre>

<p><img src="https://gitee.com/songx86/SongPicBed/raw/master/img/image-20200329130242878.png" alt="image-20200329130242878"></p>
<h3 id="选择器"><a href="#选择器" class="headerlink" title="选择器"></a>选择器</h3><p>$(“ ”)就是取值。</p>
<p>具体用法:</p>
<table>
<thead>
<tr>
<th>语法</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>$(“*“)</td>
<td>选取所有元素</td>
</tr>
<tr>
<td>$(this)</td>
<td>选取当前 HTML 元素</td>
</tr>
<tr>
<td>$(“p.intro”)</td>
<td>选取 class 为 intro 的 <p> 元素</td>
</tr>
<tr>
<td>$(“p:first”)</td>
<td>选取第一个 <p> 元素</td>
</tr>
<tr>
<td>$(“ul li:first”)</td>
<td>选取第一个 <ul> 元素的第一个 <li> 元素</td>
</tr>
<tr>
<td>$(“ul li:first-child”)</td>
<td>选取每个 <ul> 元素的第一个 <li> 元素</td>
</tr>
<tr>
<td>$(“[href]”)</td>
<td>选取带有 href 属性的元素</td>
</tr>
<tr>
<td>$(“a[target=’_blank’]”)</td>
<td>选取所有 target 属性值等于 “_blank” 的 <a> 元素</td>
</tr>
<tr>
<td>$(“a[target!=’_blank’]”)</td>
<td>选取所有 target 属性值不等于 “_blank” 的 <a> 元素</td>
</tr>
<tr>
<td>$(“:button”)</td>
<td>选取所有 type=”button” 的 <input> 元素 和 <button> 元素</td>
</tr>
<tr>
<td>$(“tr:even”)</td>
<td>选取偶数位置的 <tr> 元素</td>
</tr>
<tr>
<td>$(“tr:odd”)</td>
<td>选取奇数位置的 <tr> 元素</td>
</tr>
</tbody></table>
<h3 id="事件"><a href="#事件" class="headerlink" title="事件"></a>事件</h3><table>
<thead>
<tr>
<th align="left">鼠标事件</th>
<th align="left">键盘事件</th>
<th align="left">表单事件</th>
<th align="left">文档/窗口事件</th>
</tr>
</thead>
<tbody><tr>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-click.html">click</a> (点击)</td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-keypress.html">keypress</a> （按了字符）</td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-submit.html">submit</a></td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-load.html">load</a></td>
</tr>
<tr>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-dblclick.html">dblclick</a> （双击）</td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-keydown.html">keydown</a> （按下）</td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-change.html">change</a></td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-resize.html">resize</a></td>
</tr>
<tr>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-mouseenter.html">mouseenter</a> （指针穿过）</td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-keyup.html">keyup</a> （按下后离开）</td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-focus.html">focus</a> （获得焦点）</td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-scroll.html">scroll</a></td>
</tr>
<tr>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-mouseleave.html">mouseleave</a> （指针离开）</td>
<td align="left"></td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-blur.html">blur</a> （失去焦点）</td>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-unload.html">unload</a></td>
</tr>
<tr>
<td align="left"><a target="_blank" rel="noopener" href="https://www.runoob.com/jquery/event-hover.html">hover</a> （光标悬停）</td>
<td align="left"></td>
<td align="left"></td>
<td align="left"></td>
</tr>
</tbody></table>
<h3 id="简单动画实例和函数"><a href="#简单动画实例和函数" class="headerlink" title="简单动画实例和函数"></a>简单动画实例和函数</h3><h4 id="显示和隐藏"><a href="#显示和隐藏" class="headerlink" title="显示和隐藏"></a>显示和隐藏</h4><p>这是显示和隐藏的函数：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token comment">//隐藏</span>
<span class="token function">$</span><span class="token punctuation">(</span>selector<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">hide</span><span class="token punctuation">(</span>speed<span class="token punctuation">,</span>callback<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//显示</span>
<span class="token function">$</span><span class="token punctuation">(</span>selector<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">show</span><span class="token punctuation">(</span>speed<span class="token punctuation">,</span>callback<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//隐藏和显示切换</span>
<span class="token function">$</span><span class="token punctuation">(</span>selector<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">toggle</span><span class="token punctuation">(</span>speed<span class="token punctuation">,</span>callback<span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>可选的 speed 参数规定隐藏/显示的速度，可以取以下值：”slow”、”fast” 或毫秒。</p>
<p>可选的 callback 参数是隐藏或显示完成后所执行的函数名称。</p>
<p>实例</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
  <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">".hidebtn"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"div"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">toggle</span><span class="token punctuation">(</span><span class="token number">1000</span><span class="token punctuation">,</span><span class="token string">"linear"</span><span class="token punctuation">,</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
      <span class="token function">alert</span><span class="token punctuation">(</span><span class="token string">"方法已完成!"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>PS:</p>
<blockquote>
<p>1.$(<em>selector</em>)选中的元素的个数为n个，则callback函数会执行n次；</p>
<p>2.callback函数名后加括号，会立刻执行函数体，而不是等到显示/隐藏完成后才执行；</p>
<p>3.callback既可以是函数名，也可以是匿名函数</p>
</blockquote>
<h4 id="淡入淡出方法"><a href="#淡入淡出方法" class="headerlink" title="淡入淡出方法"></a>淡入淡出方法</h4><p>通过 jQuery，您可以实现元素的淡入淡出效果。</p>
<p>jQuery 拥有下面四种 fade 方法：</p>
<ul>
<li>fadeIn(speed,callback)    淡入，显示不可见元素</li>
<li>fadeOut(speed,callback)    淡出，隐藏可见的元素  </li>
<li>fadeToggle(speed,callback)    切换两个状态</li>
<li>fadeTo(speed,opacity,callback)    渐变为指定的透明度（0–1之间）</li>
</ul>
<p>使用方法同隐藏显示。</p>
<h4 id="滑动方法"><a href="#滑动方法" class="headerlink" title="滑动方法"></a>滑动方法</h4><p>通过 jQuery，您可以在元素上创建滑动效果。</p>
<p>jQuery 拥有以下滑动方法：</p>
<ul>
<li>slideDown()</li>
<li>slideUp()</li>
<li>slideToggle()</li>
</ul>
<p>使用方法及参数同上，speed和callback</p>
<h4 id="动画"><a href="#动画" class="headerlink" title="动画"></a>动画</h4><pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"button"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
  <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"div"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">animate</span><span class="token punctuation">(</span><span class="token punctuation">&#123;</span>
    left<span class="token operator">:</span><span class="token string">'250px'</span><span class="token punctuation">,</span>
    opacity<span class="token operator">:</span><span class="token string">'0.5'</span><span class="token punctuation">,</span>
    height<span class="token operator">:</span><span class="token string">'150px'</span><span class="token punctuation">,</span>
    width<span class="token operator">:</span><span class="token string">'150px'</span>
  <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>大概就是这样，这里比较复杂先跳过</p>
<h4 id="jQuery链"><a href="#jQuery链" class="headerlink" title="jQuery链"></a>jQuery链</h4><pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#p1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">css</span><span class="token punctuation">(</span><span class="token string">"color"</span><span class="token punctuation">,</span><span class="token string">"red"</span><span class="token punctuation">)</span>
  <span class="token punctuation">.</span><span class="token function">slideUp</span><span class="token punctuation">(</span><span class="token number">2000</span><span class="token punctuation">)</span>
  <span class="token punctuation">.</span><span class="token function">slideDown</span><span class="token punctuation">(</span><span class="token number">2000</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span></span></code></pre>

<p>jQuery中可以这样写，一个函数接着一个函数，这个就叫jQuery链接进制。</p>
<h2 id="HTML"><a href="#HTML" class="headerlink" title="HTML"></a>HTML</h2><h3 id="获得（查）"><a href="#获得（查）" class="headerlink" title="获得（查）"></a>获得（查）</h3><h4 id="获得内容-text-、html-、val"><a href="#获得内容-text-、html-、val" class="headerlink" title="获得内容 - text()、html()、val()"></a>获得内容 - text()、html()、val()</h4><p>获得<strong>内容</strong>的三个函数： text()、html() 以及 val()</p>
<p>三个简单实用的用于 DOM 操作的 jQuery 方法：</p>
<ul>
<li>text() - 所选元素的文本内容</li>
<li>html() - 所选元素的内容（包括 HTML 标记）</li>
<li>val() - 表单字段的值</li>
</ul>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#btn1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
  <span class="token function">alert</span><span class="token punctuation">(</span><span class="token string">"Text: "</span> <span class="token operator">+</span> <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#test"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">text</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#btn2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
  <span class="token function">alert</span><span class="token punctuation">(</span><span class="token string">"HTML: "</span> <span class="token operator">+</span> <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#test"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">html</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h4 id="获取属性-attr"><a href="#获取属性-attr" class="headerlink" title="获取属性 - attr()"></a>获取属性 - attr()</h4><p>jQuery attr() 方法用于获取<strong>属性值</strong>。</p>
<p>下面的例子演示如何获得链接中 href 属性的值：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"button"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
  <span class="token function">alert</span><span class="token punctuation">(</span><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#runoob"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">attr</span><span class="token punctuation">(</span><span class="token string">"href"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span></span></code></pre>

<blockquote>
<p><strong>attr</strong> 和 <strong>prop</strong> 的区别介绍：</p>
<p>对于 HTML 元素本身就带有的固有属性，在处理时，使用 <strong>prop</strong> 方法。</p>
<p>对于 HTML 元素我们自己自定义的 DOM 属性，在处理时，使用 <strong>attr</strong> 方法。</p>
<p>实例 1：</p>
<pre class="line-numbers language-html" data-language="html"><code class="language-html"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>a</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>https://www.runoob.com<span class="token punctuation">"</span></span> <span class="token attr-name">target</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>_self<span class="token punctuation">"</span></span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>btn<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>菜鸟教程<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>a</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>

<p>这个例子里<code>&lt;a&gt; </code>元素的 DOM 属性有: <strong>href、target</strong> 和 <strong>class</strong>，这些属性就是 **** 元素本身就带有的属性，也是 W3C 标准里就包含有这几个属性，或者说在 IDE 里能够智能提示出的属性，这些就叫做固有属性。处理这些属性时，建议使用 <strong>prop</strong> 方法。</p>
<pre class="line-numbers language-html" data-language="html"><code class="language-html"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>a</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>#<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>link1<span class="token punctuation">"</span></span> <span class="token attr-name">action</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>delete<span class="token punctuation">"</span></span> <span class="token attr-name">rel</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>nofollow<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>删除<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>a</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>

<p>这个例子里<a> 元素的 DOM 属性有: <strong>href、id</strong> 和 <strong>action</strong>，很明显，前两个是固有属性，而后面一个 <strong>action</strong> 属性是我们自己自定义上去的，<code>&lt;a&gt; </code>元素本身是没有这个属性的。这种就是自定义的 DOM 属性。处理这些属性时，建议使用 <strong>attr</strong> 方法。</p>
</blockquote>
<h3 id="设置（改）"><a href="#设置（改）" class="headerlink" title="设置（改）"></a>设置（改）</h3><h4 id="设置内容"><a href="#设置内容" class="headerlink" title="设置内容"></a>设置内容</h4><h5 id="直接设置元素的值"><a href="#直接设置元素的值" class="headerlink" title="直接设置元素的值"></a>直接设置元素的值</h5><pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#btn1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#test1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">text</span><span class="token punctuation">(</span><span class="token string">"Hello world!"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#btn2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#test2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">html</span><span class="token punctuation">(</span><span class="token string">"&lt;b>Hello world!&lt;/b>"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#btn3"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#test3"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">val</span><span class="token punctuation">(</span><span class="token string">"RUNOOB"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h5 id="回调函数"><a href="#回调函数" class="headerlink" title="回调函数"></a>回调函数</h5><p>上面的三个 jQuery 方法：text()、html() 以及 val()，同样拥有回调函数。回调函数有两个参数：被选元素列表中当前元素的下标，以及原始（旧的）值。然后以函数新值返回您希望使用的字符串。</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#btn1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#test1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">text</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">i<span class="token punctuation">,</span>origText</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
        <span class="token keyword">return</span> <span class="token string">"旧文本: "</span> <span class="token operator">+</span> origText <span class="token operator">+</span> <span class="token string">" 新文本: Hello world! (index: "</span> <span class="token operator">+</span> i <span class="token operator">+</span> <span class="token string">")"</span><span class="token punctuation">;</span> 
    <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
 
<span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#btn2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#test2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">html</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">i<span class="token punctuation">,</span>origText</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
        <span class="token keyword">return</span> <span class="token string">"旧 html: "</span> <span class="token operator">+</span> origText <span class="token operator">+</span> <span class="token string">" 新 html: Hello &lt;b>world!&lt;/b> (index: "</span> <span class="token operator">+</span> i <span class="token operator">+</span> <span class="token string">")"</span><span class="token punctuation">;</span> 
    <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h5 id="设置属性"><a href="#设置属性" class="headerlink" title="设置属性"></a>设置属性</h5><p>attr()同样适用</p>
<p>直接设置属性的值：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"button"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#runoob"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">attr</span><span class="token punctuation">(</span><span class="token punctuation">&#123;</span>
        <span class="token string">"href"</span> <span class="token operator">:</span> <span class="token string">"http://www.runoob.com/jquery"</span><span class="token punctuation">,</span>
        <span class="token string">"title"</span> <span class="token operator">:</span> <span class="token string">"jQuery 教程"</span>
    <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>回调函数设置属性的值：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"button"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
  <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#runoob"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">attr</span><span class="token punctuation">(</span><span class="token string">"href"</span><span class="token punctuation">,</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">i<span class="token punctuation">,</span>origValue</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token keyword">return</span> origValue <span class="token operator">+</span> <span class="token string">"/jquery"</span><span class="token punctuation">;</span> 
  <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h3 id="增加（增）"><a href="#增加（增）" class="headerlink" title="增加（增）"></a>增加（增）</h3><h4 id="添加新的元素"><a href="#添加新的元素" class="headerlink" title="添加新的元素"></a>添加新的元素</h4><p>我们将学习用于添加新内容的四个 jQuery 方法：</p>
<ul>
<li>append() - 在被选元素的结尾插入内容</li>
<li>prepend() - 在被选元素的开头插入内容</li>
<li>after() - 在被选元素之后插入内容</li>
<li>before() - 在被选元素之前插入内容</li>
</ul>
<p>prepend()方法和append()方法：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token keyword">function</span> <span class="token function">appendText</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">&#123;</span>
    <span class="token keyword">var</span> txt1<span class="token operator">=</span><span class="token string">"&lt;p>文本。&lt;/p>"</span><span class="token punctuation">;</span>              <span class="token comment">// 使用 HTML 标签创建文本</span>
    <span class="token keyword">var</span> txt2<span class="token operator">=</span><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"&lt;p>&lt;/p>"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">text</span><span class="token punctuation">(</span><span class="token string">"文本。"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  <span class="token comment">// 使用 jQuery 创建文本</span>
    <span class="token keyword">var</span> txt3<span class="token operator">=</span>document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">"p"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    txt3<span class="token punctuation">.</span>innerHTML<span class="token operator">=</span><span class="token string">"文本。"</span><span class="token punctuation">;</span>               <span class="token comment">// 使用 DOM 创建文本 text with DOM</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"body"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span>txt1<span class="token punctuation">,</span>txt2<span class="token punctuation">,</span>txt3<span class="token punctuation">)</span><span class="token punctuation">;</span>        <span class="token comment">// 追加新元素</span>
<span class="token punctuation">&#125;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>after()方法和before()方法：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token keyword">function</span> <span class="token function">afterText</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">&#123;</span>
    <span class="token keyword">var</span> txt1<span class="token operator">=</span><span class="token string">"&lt;b>I &lt;/b>"</span><span class="token punctuation">;</span>                    <span class="token comment">// 使用 HTML 创建元素</span>
    <span class="token keyword">var</span> txt2<span class="token operator">=</span><span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"&lt;i>&lt;/i>"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">text</span><span class="token punctuation">(</span><span class="token string">"love "</span><span class="token punctuation">)</span><span class="token punctuation">;</span>     <span class="token comment">// 使用 jQuery 创建元素</span>
    <span class="token keyword">var</span> txt3<span class="token operator">=</span>document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">"big"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  <span class="token comment">// 使用 DOM 创建元素</span>
    txt3<span class="token punctuation">.</span>innerHTML<span class="token operator">=</span><span class="token string">"jQuery!"</span><span class="token punctuation">;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"img"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">after</span><span class="token punctuation">(</span>txt1<span class="token punctuation">,</span>txt2<span class="token punctuation">,</span>txt3<span class="token punctuation">)</span><span class="token punctuation">;</span>          <span class="token comment">// 在图片后添加文本</span>
<span class="token punctuation">&#125;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<blockquote>
<p>append/prepend 是在选择元素内部嵌入。</p>
<p>after/before 是在元素外面追加。</p>
</blockquote>
<h3 id="删除"><a href="#删除" class="headerlink" title="删除"></a>删除</h3><p>如需删除元素和内容，一般可使用以下两个 jQuery 方法：</p>
<ul>
<li>remove() - 删除被选元素（及其子元素）</li>
<li>empty() - 从被选元素中删除子元素</li>
</ul>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token comment">//移除div1，啥都不剩</span>
<span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#div1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">remove</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//移除div1中的东西，剩下&lt;div1>&lt;/div1></span>
<span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#div1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">empty</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span></span></code></pre>

<p>可以过滤进行删除：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token comment">//移除所有class="italic" 的 p 元素。</span>
<span class="token function">$</span><span class="token punctuation">(</span>document<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">ready</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
  <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"button"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">click</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"p"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">remove</span><span class="token punctuation">(</span><span class="token string">".italic"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h3 id="操作-CSS"><a href="#操作-CSS" class="headerlink" title="操作 CSS"></a>操作 CSS</h3><p>jQuery 拥有若干进行 CSS 操作的方法。我们将学习下面这些：</p>
<ul>
<li>addClass() - 向被选元素添加一个或多个类</li>
<li>removeClass() - 从被选元素删除一个或多个类</li>
<li>toggleClass() - 对被选元素进行添加/删除类的切换操作</li>
<li>css() - 设置或返回样式属性</li>
</ul>
<p>css() 方法设置或返回被选元素的一个或多个样式属性。</p>
<h2 id="数据校验"><a href="#数据校验" class="headerlink" title="数据校验"></a>数据校验</h2><p>引入：</p>
<pre class="line-numbers language-html" data-language="html"><code class="language-html"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://static.runoob.com/assets/jquery-validation-1.14.0/lib/jquery.js<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script"></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://static.runoob.com/assets/jquery-validation-1.14.0/dist/jquery.validate.min.js<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script"></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre>

<p>加载完成后调用：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token function">$</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">ready</span><span class="token punctuation">(</span><span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">&#123;</span>
    <span class="token function">validateRule</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
$<span class="token punctuation">.</span>validator<span class="token punctuation">.</span><span class="token function">setDefaults</span><span class="token punctuation">(</span><span class="token punctuation">&#123;</span>
    <span class="token function-variable function">submitHandler</span><span class="token operator">:</span> <span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">&#123;</span>
        <span class="token function">save</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">&#125;</span>
<span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>编写校验规则：</p>
<pre class="line-numbers language-js" data-language="js"><code class="language-js"><span class="token comment">//数据校验规则</span>
<span class="token keyword">function</span> <span class="token function">validateRule</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">&#123;</span>
    <span class="token comment">//alert('成功3！');</span>
    <span class="token function">$</span><span class="token punctuation">(</span><span class="token string">"#staffInfoAddForm"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">validate</span><span class="token punctuation">(</span><span class="token punctuation">&#123;</span>
        rules<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
            name<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span> <span class="token boolean">true</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            tel<span class="token operator">:</span><span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span><span class="token boolean">true</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            username<span class="token operator">:</span><span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span><span class="token boolean">true</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            password<span class="token operator">:</span><span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span><span class="token boolean">true</span><span class="token punctuation">,</span>
                minlength<span class="token operator">:</span><span class="token number">5</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            passwordagain<span class="token operator">:</span><span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span><span class="token boolean">true</span><span class="token punctuation">,</span>
                minlength<span class="token operator">:</span><span class="token number">5</span><span class="token punctuation">,</span>
                equalTo<span class="token operator">:</span><span class="token string">"#password"</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            intime<span class="token operator">:</span><span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span><span class="token boolean">true</span>
            <span class="token punctuation">&#125;</span>
        <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
        messages<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
            name<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span> icon <span class="token operator">+</span> <span class="token string">"请输入姓名"</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            tel<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span> icon <span class="token operator">+</span> <span class="token string">"请输入联系方式"</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            username<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span> icon <span class="token operator">+</span> <span class="token string">"请输入用户账号"</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            password<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span> icon <span class="token operator">+</span> <span class="token string">"请输入密码"</span><span class="token punctuation">,</span>
                minlength<span class="token operator">:</span> <span class="token string">"密码长度不能小于 5 个字母"</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            passwordagain<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span> icon <span class="token operator">+</span> <span class="token string">"请再次输入密码"</span><span class="token punctuation">,</span>
                minlength<span class="token operator">:</span> <span class="token string">"密码长度不能小于 5 个字母"</span><span class="token punctuation">,</span>
                equalTo<span class="token operator">:</span> <span class="token string">"两次密码输入不一致"</span>
            <span class="token punctuation">&#125;</span><span class="token punctuation">,</span>
            intime<span class="token operator">:</span> <span class="token punctuation">&#123;</span>
                required<span class="token operator">:</span> icon <span class="token operator">+</span> <span class="token string">"请输入入职日期"</span>
            <span class="token punctuation">&#125;</span>
        <span class="token punctuation">&#125;</span>
    <span class="token punctuation">&#125;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>常见的校验规则：</p>
<table>
<thead>
<tr>
<th align="left">序号</th>
<th align="left">规则</th>
<th align="left">描述</th>
</tr>
</thead>
<tbody><tr>
<td align="left">1</td>
<td align="left">required:true</td>
<td align="left">必须输入的字段。</td>
</tr>
<tr>
<td align="left">2</td>
<td align="left">remote:”check.php”</td>
<td align="left">使用 ajax 方法调用 check.php 验证输入值。</td>
</tr>
<tr>
<td align="left">3</td>
<td align="left">email:true</td>
<td align="left">必须输入正确格式的电子邮件。</td>
</tr>
<tr>
<td align="left">4</td>
<td align="left">url:true</td>
<td align="left">必须输入正确格式的网址。</td>
</tr>
<tr>
<td align="left">5</td>
<td align="left">date:true</td>
<td align="left">必须输入正确格式的日期。日期校验 ie6 出错，慎用。</td>
</tr>
<tr>
<td align="left">6</td>
<td align="left">dateISO:true</td>
<td align="left">必须输入正确格式的日期（ISO），例如：2009-06-23，1998/01/22。只验证格式，不验证有效性。</td>
</tr>
<tr>
<td align="left">7</td>
<td align="left">number:true</td>
<td align="left">必须输入合法的数字（负数，小数）。</td>
</tr>
<tr>
<td align="left">8</td>
<td align="left">digits:true</td>
<td align="left">必须输入整数。</td>
</tr>
<tr>
<td align="left">9</td>
<td align="left">creditcard:</td>
<td align="left">必须输入合法的信用卡号。</td>
</tr>
<tr>
<td align="left">10</td>
<td align="left">equalTo:”#field”</td>
<td align="left">输入值必须和 #field 相同。</td>
</tr>
<tr>
<td align="left">11</td>
<td align="left">accept:</td>
<td align="left">输入拥有合法后缀名的字符串（上传文件的后缀）。</td>
</tr>
<tr>
<td align="left">12</td>
<td align="left">maxlength:5</td>
<td align="left">输入长度最多是 5 的字符串（汉字算一个字符）。</td>
</tr>
<tr>
<td align="left">13</td>
<td align="left">minlength:10</td>
<td align="left">输入长度最小是 10 的字符串（汉字算一个字符）。</td>
</tr>
<tr>
<td align="left">14</td>
<td align="left">rangelength:[5,10]</td>
<td align="left">输入长度必须介于 5 和 10 之间的字符串（汉字算一个字符）。</td>
</tr>
<tr>
<td align="left">15</td>
<td align="left">range:[5,10]</td>
<td align="left">输入值必须介于 5 和 10 之间。</td>
</tr>
<tr>
<td align="left">16</td>
<td align="left">max:5</td>
<td align="left">输入值不能大于 5。</td>
</tr>
<tr>
<td align="left">17</td>
<td align="left">min:10</td>
<td align="left">输入值不能小于 10。</td>
</tr>
</tbody></table>
<p><a target="_blank" rel="noopener" href="https://www.runoob.com/try/try.php?filename=jquery_validate_demo1">演示Demo</a></p>

                
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